I got a lot of complains about warp killing and I thought this could prevent it a bit.
It will prevent players from locking you into a room and killing you. Of course they could still build towers or kill your with lava etc. But you can report that on forums and I will remove their warp traps.

The only area you can pvp in now is the pvp arena.

And the best thing: You can wave at your friends without hitting them ;3